A group of fitness enthusiasts find themselves trapped in a deadly nightmare when an obsession with self-improvement turns a high-energy aerobics culture into a fight for survival.
乔治娅·克里斯,瑞妮·布朗,杰夫·迪伦·格雷厄姆,杰瑞米·金,约翰·阿彻尔·朗格伦,乔·戴维森,泰德·盖根,Jack Amos,Kibwe Dorsey,Rod Grant,Norberto Santiago,Jerry Allen,Krystal Badia,Clayton T. Smith Jr.,Chris Antilian,Christopher Jacobson,Leslie Crytzer,Eli T. Peña,Jori Davison,Melissa K. Webb,Tyler Cross
简介： A group of fitness enthusiasts find themselves trapped in a deadly nightmare when an obsession with self-improvement turns a high-energy aerobics culture into a fight for survival.
